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Aqueous Dispersions
of
Colloidal Antimony Pentoxide
Flame Retardant Additives
NYACOL ®A1530, A1530G, A1540N, A1550, A1550pH7
Nyacol Nano Technologies,
Inc. offers aqueous colloidal antimony pentoxide as a synergist
with halogenated flame retardants in textiles, adhesives,
coatings and water-based systems.
Advantages Over Conventional Antimony Trioxide Systems
· Better
penetration of the substrate.
· Less
pigmenting or whitening effect for deep mass tone colors.
· Easier
handling and processing. Liquid dispersions will not clog spray
guns.
· Translucency
for coatings, films and laminates.
· Easy
compounding; no special dispersing equipment required.
· High
FR efficiency for minimal added weight or change in hand.
Products
NYACOL A1530, A1530G, A1540N, A1550 and
A1550pH7 are water-based dispersions of nano-sized antimony
pentoxide used with halogenated flame retardants to increase
their efficiency when used in flame retardant treatments
of materials such as textiles, nonwovens, adhesive latices,
and coatings.
Typical Properties
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|
A1530
|
A1530G
|
A1540N
|
A1550 |
A1550pH7 |
|
Antimony Pentoxide expressed as Sb2O5
|
29%
|
29%
|
38%
|
48%
|
48%
|
|
pH
|
5
|
5
|
8
|
5
|
7
|
|
Viscosity in centipoise
|
5
|
5
|
5
|
10
|
10
|
|
Specific Gravity
|
1.37
|
1.37
|
1.60
|
1.81
|
1.80
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Formulating Guidelines
The total amount and ratio of flame retardants
needed depend upon the severity of the test requirements
and the material being treated. In most cases, optimum flame
retardant performance in a halogen/antimony system is attained
when the halogen and antimony are used at a 3:1 mole ratio.
Exceptions are PVC and PVCD latices, which contain high
levels of chlorine, so we recommend the antimony pentoxide
be added to your formulation until the complete system passes
the required flame test.
Electron micrographs of antimony oxides in acrylonitrile butadiene
styrene
(approximately 55,000 magnification)
Nano-sized particles of NYACOL® antimony
pentoxide Average size about 0.03 microns
Pigment grade antimony trioxide
Average size about 1.0 microns
Formulation Example
This simple FR application for the finishing
of nonwoven polyester fiber padding for automotive interiors
consists of a 'hard' PVC latex, NYACOL A1550 or A1550pH7,
water and some ammonia solution:
To 10 parts NYACOL 1550 or A1550pH7, add 40 parts water
with sufficient ammonia to bring the pH to 9, mix the water
and the A1550 or A1550pH7, and add 50 parts PVC latex.
These ingredients are mixed, sprayed onto the nonwoven padding,
and heat cured.
Textile Finishes
Complex textile finishes often contain additives
such as softeners, anti-soil agents, anti-static agents
and cross-linkers, and are beyond the scope of these guidelines.
Please contact Nyacol Nano Technologies, Inc. for recommendations
for commercial manufacturers of flame retardant textile
finishes who uses NYACOL brand antimony pentoxide.
Compounding Information
NYACOL A1530, A1530G, A1550 and A1550pH7
aqueous dispersions are supplied at approximately pH5 or
pH7 and, in nearly all applications should have the pH adjusted
before compounding with any latex. This adjustment assures
full utilization of the colloidal particles without agglomeration
or latex destabilization. Follow the latex manufacturers'
recommendations for the optimum pH. Neutralize using ammonium
hydroxide, which will volatilize during the drying and curing
of latex film. Please note: Never add NYACOL A1550 or
A1550pH7 directly to a latex, but dilute to 40% Sb2O5 or
less. It is essential to dilute either the NYACOL dispersion
or the latex with as much water as is practical before mixing
these ingredients.
Neoprene-type or PVDC latices often recommend avoiding the
use of ammonia. A 15% solution of sodium hydroxide can be
used or use NYACOL A1540N, which is neutralized with sodium
hydroxide.
NYACOL A1530 and A1530G: Typical latices require an approximate
pH of 9. This will require approximately ½ kilogram of 28%
ammonium hydroxide to 10 kilograms of A1530 and A1530G.
Add with good mixing.
NYACOL A1550 and A1550pH7: Dilute with water to 40% Sb2O5
or less, then neutralize with ammonium hydroxide.
NYACOL A1540N: As an alternative, we recommend NYACOL A1540N,
a 40% pentoxide dispersion, which is neutralized with sodium
hydroxide.
Storage and Handling
NYACOL antimony pentoxide sols should be
stored in a cool dry area. Shelf life is guaranteed for
one year. Mixing in the drum may be necessary if the product
is stored for an extended amount of time. See the Material
Safety Data Sheet for specific handling recommendations.
Please note that these products should be protected from
freezing. Should the product freeze, thaw the material and
remix before use.
Packaging
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Size
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Weight
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| A1530 |
55 gallon drum / 208 liters |
600 pounds net / 272 kilograms net |
| A1530G |
55 gallon drum / 208 liters |
600 pounds net / 272 kilograms net |
| A1540N |
30 gallon drum / 113 liters |
375 pounds net / 170 kilograms net |
| A1550 |
30 gallon drum / 113 liters |
450 pounds net / 204 kilograms net |
| A1550pH7 |
30 gallon drum / 113 liters |
452 pounds net / 205 kilograms net |
Custom Products
Nyacol Nano Technologies, Inc. can vary specific
properties such as the particle size
distribution, pH, concentration, and packaging for your
specific application. Contact us for details on availability, price
and minimum order size for custom products.
Non-FR Products
Nyacol Nano Technologies, Inc.'s Inorganic
Colloids Group also manufactures colloidal materials for
the ceramic, catalyst, metal casting and oil refining industries.
These products include oxides of zirconium, yttrium, cerium,
tin, antimony and aluminum. Custom products are also available.
Contact the Nyacol Nano Technologies, Inc. for information
on these products.
For additional information or to place an order, contact:
Nyacol Nano Technologies, Inc.
Megunko Road
P.O. Box 349
Ashland, MA
01721
| Toll Free: |
|
800-GET-SOLS (438-7657) |
| Telephone: |
|
508-881-2220 |
| Fax: |
|
508-881-1855 |
Information herein is accurate to the
best of our knowledge.
Suggestions are made without warranty or guarantee of
results. Before using, user
should determine the suitability of the product for its intended use and
user assumes risk and liability in connection therewith. We do not suggest violation of
any existing patents nor give permission to practice any patented
invention without a license.
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